74LS93 IC 4-BIT BINARY COUNTER 

74LS93 High Speed 4-bit ripple type Binary Counter

The 74LS93 is high-speed 4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two section and either a divide-by-eight (LS93) section which are triggered by a HIGH-to-LOW transition on the clock inputs. Each section can be used separately or tied together (Q to CP) to form BCD, bi-quinary, modulo-12, or modulo-16 counters. The counter have a 2-input gated Master Reset (Clear), and the LS90 also has a 2-input gated Master Set (Preset 9).

Specifications Of 74LS93 IC 4-BIT BINARY COUNTER

• Low Power Consumption:Typically 45 mw
  
• High Count Rates:Typically 42 MHz
  
• Choice of Counting Modes: BCD, Bi-Quinary, Divide-by-Twelve,Binary
  
• Input Clamp Diodes Limit High Speed Termination Effects
  

• 4-Bit Ripple Counter:The output Q0 must be externally connected to input CP1. The input count pulses are applied to input CP0. Simultaneous divisions of 2, 4, 8, and 16 are performed at the Q0, Q1, Q2, and Q3 outputs as shown in the truth table.
  
• 3-Bit Ripple Counter:The input count pulses are applied to input CP1. Simultaneous frequency divisions of 2, 4, and 8 are available at the Q1, Q2, and Q3 outputs. Independent use of the first flip-flop is available if the reset function coincides with reset of the 3-bit ripple-through counter

Related Links

• 74LS93 Datasheet
• Divide by 16 counter using 74LS93
• Decade Counter using 74LS93